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论文类型：期刊论文

发表时间：2011-01-01

发表刊物：ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE

收录刊物：SCIE

卷号：637

期号：1

页面范围：137-141

ISSN号：0044-2313

关键字：Hydrothermal synthesis; Helical structures; Hydrogen bonds; Thermal analysis; Luminescence

摘要：A new protonated borophosphate (H3O)Mg(H2O)(2)[BP2O8]center dot H2O (1) was synthesized under mild hydrothermal conditions and characterized by single-crystal X-ray diffraction, FTIR spectroscopy and TG-DTA. The compound crystallizes in the hexagonal system, space group P6(1)22 (No 178), a = 9.4462(7) angstrom, c = 15.759(2) angstrom, V = 1217.8(2) angstrom(3), and Z = 6. There exist infinite helical (1)(infinity){[BP2O8](3-)} ribbons built up from corner-sharing PO4 and BO4 tetrahedra, which are connected by MgO4(H2O)(2) leading to an infinite three-dimensional open-framework. The H3O+ ions are located at the free thread of the helical ribbons, whereas crystallized water occupy the channels of the helical ribbons. The dehydration of the compound occurs at a higher temperature which is presumably due to the anisotropic hydrogen bonds in the crystal structure. The luminescent properties of the compound were studied.